I used to get razor bumps and razor burn all the time, and I'd use a medicated astringent lotion to help with the redness and discomfort. I knew the razor bumps were caused by ingrown hairs, but I couldn't figure out why I was getting razor burn every time I shaved.
I finally realized I wasn't changing out my disposable razors often enough, and I wasn't giving my shaving cream enough time to moisturize my skin. I started using disposable razors with moisturizing strips and gel shaving cream instead of foam. The results have been so much better. I think I was just in too much of a hurry to get the shaving done in the morning, and I also wanted to save money by reusing my old razors too long.